[PATCH] drm: Pretty print pixel format in drm_fb_get_bpp_depth() and format_check()

[ville.syrj...@linux.intel.com]

From: Ville Syrj?l? <ville.syrj...@linux.intel.com>

drm_fb_get_bpp_depth() likes to complain about unsupported pixel formats
but doesn't bother telling us what the format was. Also format_check()
just returns an error when it encouters an invalid format, leaving the
user scratching his head trying to figure out why addfb failed. Make
life a bit easier by using drm_get_format_name() in both places.

Signed-off-by: Ville Syrj?l? <ville.syrjala at linux.intel.com>
---
 drivers/gpu/drm/drm_crtc.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index d7a8370..8b428e5 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -2489,6 +2489,8 @@ static int format_check(const struct drm_mode_fb_cmd2 *r)
        case DRM_FORMAT_YVU444:
                return 0;
        default:
+               DRM_DEBUG_KMS("invalid pixel format %s\n",
+                             drm_get_format_name(r->pixel_format));
                return -EINVAL;
        }
 }
@@ -3822,7 +3824,8 @@ void drm_fb_get_bpp_depth(uint32_t format, unsigned int 
*depth,
                *bpp = 32;
                break;
        default:
-               DRM_DEBUG_KMS("unsupported pixel format\n");
+               DRM_DEBUG_KMS("unsupported pixel format %s\n",
+                             drm_get_format_name(format));
                *depth = 0;
                *bpp = 0;
                break;
-- 
1.8.1.5